Original description as Haplochromis hennydaviesae:
ZooBank:06F2B6C3-82FD-4D0C-A98A-8FC0FBF2473C.
- Burgess, Warren & Herbert R. Axelrod. 1973. "New Cichlids from Lake Malawi". Tropical Fish Hobbyist Magazine. 22(2):14, 87-98 (crc00162)
Conservation: Placidochromis hennydaviesae is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2018).